7498240 has 80 divisors (see below), whose sum is σ = 18782280. Its totient is φ = 2867200.

The previous prime is 7498237. The next prime is 7498247. The reversal of 7498240 is 428947.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 7311616 + 186624 = 2704^2 + 432^2 .

It is a tau number, because it is divible by the number of its divisors (80).

It is a junction number, because it is equal to n+sod(n) for n = 7498196 and 7498205.

It is not an unprimeable number, because it can be changed into a prime (7498247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74190 + ... + 74290.

Almost surely, 2^7498240 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 7498240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (9391140).

7498240 is an abundant number, since it is smaller than the sum of its proper divisors (11284040).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

7498240 is a wasteful number, since it uses less digits than its factorization.

7498240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 153 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The square root of 7498240 is about 2738.2914381052. The cubic root of 7498240 is about 195.7280693783.

The spelling of 7498240 in words is "seven million, four hundred ninety-eight thousand, two hundred forty".